The correct option is B Allosomes
In human
beings, 46 chromosomes are found. There are two types of chromosomes- autosomes
and allosomes. Out of 23 pairs of chromosomes, only one pair helps in sex determination. That pair of chromosomes is known as allosomes or sex chromosomes and rest 22 pairs
are known as autosomes. Allosomes carry genes responsible for sexual characteristics.
In females, two allosomes are identical, i.e., XX. But in males, both
alllosomes are different, i.e., XY. Allosomes also have significant role in
sex-linked inheritance.